import numpy as np
import matplotlib.pyplot as plt
import pandas as pd
l = np.array([2,3,4,6])
print(l)
plt.title("xxxx")
plt.show()
df=pd.DataFrame(data=l,index=['one','two','three','four'])
print(df)
# python 3.9 pycharm
'''
pip install numpy -i https://pypi.tuna.tsinghua.edu.cn/simple
pip install matplotlib -i https://pypi.tuna.tsinghua.edu.cn/simple
pip install pandas -i https://pypi.tuna.tsinghua.edu.cn/simple
pip install scikit-learn -i https://pypi.tuna.tsinghua.edu.cn/simple
pip install torch torchvision torchaudio  -i https://pypi.tuna.tsinghua.edu.cn/simple
pip install ultralytics  -i https://pypi.tuna.tsinghua.edu.cn/simple
pip install labelImg  -i https://pypi.tuna.tsinghua.edu.cn/simple
'''